Harwin M50-4304745 Equivalent & Substitute Parts

Part Overview

The Harwin M50-4304745 is a 94-position receptacle connector in the Archer M50 series, designed for board-to-board applications with 0.050" (1.27mm) pitch spacing. This connector features surface mount solder termination, gold-plated contacts, and push-pull fastening. The part is currently obsolete, making identification of suitable alternatives essential for ongoing system support and new design implementations.

Substiute Parts

M50-4304745

Harwin Inc.In Stock: 753M50-4304745 Datasheet

Current PartRFQ

M50-4302545

Harwin Inc.In Stock: 1063M50-4302545 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M50-4304745 is constrained by the following critical parameters:

• Series Compatibility: Both main and substitute parts must belong to the Harwin Archer M50 series to ensure mechanical and electrical compatibility
• Connector Type & Contact Type: Receptacle with female socket contacts are required for board-to-board mating
• Pitch Specification: 0.050" (1.27mm) mating pitch is mandatory for contact alignment
• Mounting & Termination: Surface mount with solder termination must be maintained
• Environmental Ratings: Operating temperature range of -40°C ~ 105°C and UL94 V-0 flammability rating must be preserved
• Contact Material & Finish: Phosphor bronze contacts with gold plating ensure electrical performance

The M50-4302545 qualifies as a substitute based on matching all critical parameters. The primary difference is the reduction in position count from 94 to 50 positions, which represents a functional subset of the original connector. This substitution is applicable only in applications where the lower position count meets system requirements.

Parameter Comparison

Engineering Selection Recommendations

The M50-4302545 is an active product within the Harwin Archer M50 series and maintains full compliance with ROHS3, REACH, and EAR99 classifications. This substitute part is suitable for applications where the 50-position configuration satisfies system requirements. The transition from an obsolete to an active product status provides improved long-term availability and supply chain stability.

Selection of the M50-4302545 requires confirmation that the reduced position count from 94 to 50 aligns with the application's signal and power distribution architecture. All other electrical and mechanical parameters remain equivalent between the two connectors.

Frequently Asked Questions (FAQ)

Q: Can the M50-4302545 directly replace the M50-4304745 in existing designs?

A: Direct replacement is possible only if the application requires 50 or fewer positions. The M50-4302545 is mechanically and electrically compatible with the M50-4304745 within the Archer M50 series, but the reduced position count must be accommodated in the PCB layout and mating connector design.

Q: What is the primary difference between these two connectors?

A: The M50-4304745 provides 94 positions in a 2-row configuration, while the M50-4302545 provides 50 positions in the same 2-row configuration. All other specifications, including pitch, mounting type, contact material, and operating temperature range, are identical.

Q: Are there any compliance or certification differences?

A: Both connectors maintain identical compliance certifications: ROHS3, REACH Unaffected, and EAR99 classification. The operating temperature range, flammability rating (UL94 V-0), and moisture sensitivity level (MSL 1) are equivalent.

Q: What is the significance of the M50-4304745 being obsolete?

A: The obsolete status indicates that the M50-4304745 is no longer in active production. The M50-4302545, as an active product, provides a viable alternative with improved availability and supply chain continuity for new designs or system maintenance.

Q: Are the mating stacking heights the same?

A: Yes, both connectors support identical mated stacking heights of 6mm and 6.5mm, ensuring compatibility with existing mating connector designs within the Archer M50 series.